10999087109 has 2 divisors, whose sum is σ = 10999087110. Its totient is φ = 10999087108.

The previous prime is 10999087081. The next prime is 10999087123. The reversal of 10999087109 is 90178099901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5700703009 + 5298384100 = 75503^2 + 72790^2 .

It is a cyclic number.

It is not a de Polignac number, because 10999087109 - 2¹² = 10999083013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10999087189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5499543554 + 5499543555.

It is an arithmetic number, because the mean of its divisors is an integer number (5499543555).

Almost surely, 2^10999087109 is an apocalyptic number.

It is an amenable number.

10999087109 is a deficient number, since it is larger than the sum of its proper divisors (1).

10999087109 is an equidigital number, since it uses as much as digits as its factorization.

10999087109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 53.

The spelling of 10999087109 in words is "ten billion, nine hundred ninety-nine million, eighty-seven thousand, one hundred nine".